Multiple-plunger weft detector



patented May 4, 1926i.v

UNirED STATES PATENToFricE.;

JOSEPH E. ELANieAN AND vEni-mois E. ASHTON, or CHESTER, PENNSYLVANIA, As-y iGNoEs To onoMPTON &-i:NowLEs LOOM wOEKs, OE WORCESTER, MASSACHU- SETTs, A CORPORATION OE MASSACTIUSETTS. f

MULTIPLE-PLUNGEE WEET DETECTOR.

Application iIed .Tune 4,

To fil-ZZ 107mm it may concern:

' Be it known that we, JosErI-I E. FLANi- GAN and FRANCIS E. ASHTON, both citizens of the United States, both residing at Chester, in the county of Delaware Vand State of Pennsylvania, have invented a new and useful l\lultiple-l?lunger Weft Detector, of which the following is a specification'. Y This invention 'relates to a weft detector of the general type shown in the priorpatent to E. H. Ryon, No. 1,221,768, dated April 31917.

It is the general object of our invention to `improve the construction therein shown by providing novel and useful devices for holding theV plungers in operative or rearward position and for permitting separate yieldingvforward movement of each plunger as `il is engaged by a sutlicient supply of weft or; the active vweft carrier.

To the attainment of this object, we provide a separate swinging weight for eachl plunger, movable outward or forward'froni its center when the corresponding plunger isv movedforward. We also provide a` novell device for simultaneously withdrawing all of the weights and plungers upon the occurrence of weft carrier transfer.

A preferred form of our invention is shown in the drawings in whichy Fig. 1 is a side elevation of parts of a loom embodying our improvements, with the lay and shuttle shown in section; l

Fig. 2 is a front elevation of the parts shown lin Fig. 1;

Fig. 3 is an enlarged plan view of our invention;

Fig. 4l is an enlarged side elevation of the parts shownV in FigB-g Fig. 5 is a side elevation of one of the swinging weights;

Fig. 6 is a partial plan view of one of the weights, looking in the direction of the arrows 6 in Fig. and

Fig. 7 is a perspective view of the means for withdrawing the plungers upon transfer.

Referring to Figs. 1 and 2, we have indicated a portion of a loom frame 10, a magazine frame 11, a transferrer 12, a lay 13, a shuttle box 14, a binder 15 and a shut tle 16 in which is mounted a bobbin or weft carrier 17. rl`he bobbin has a plurality ol holes 18 distributed in different angular relations along the length of the barrel there- 1923. f serial No. 643,211.

pivot 27 ,at the lower end of a. link 28 coniiectedto the mechanism of theweft carrier magazine. e

An actuator 30 is rvertically reciprocated in a fixed bearing 311 and at its upper end is pivoted at 32 to the floating lever 26. Then the portions 25 of the detectors 20 are all moved'out of thepath of the lever 26 by engagement withV a full bobbin or weft car-- lrierthe"lever 26 swings about its pivot 27 on the link 28.. If, however, .the end of the lever 26 engages one of the plunger'por.- tions 25 onthe downward stroke of the lever, it thereafter. swings about the detector as a pivot, drawing the linkV 28 downward and releasing a selected weft carrier for subse# yquenty transfer. u.

The mechanism thus far described 1is, in e general of the usual type andyi'n itself forms no part of our invention, which' relates par-v ticularly'to the provision `of a plurality of swinging weights pivoted upon a stud 36, mounted vin an upward projection of the stand 21. Each weight 35 has a grooved rear face, as indicated at 37 in Fig. 6, and engages the upright portion of one of the de tectorsvor plungers 20. Each weight' also has a ,forwardly'oi'fset portion 38 which in,- creases its effective pressure uponthe asso-I ciated plunger.

The weights swing freely about the stud 36 and yieldingly hold the plungers 2O in the vposition indicated in Figs. 3 and l of the returns the plunger to normal or operative position when the pressure of the weft carrier thereon is removed.V Each plungeris thereby held yieldingly in operative position, independently of the other plungers, I

and movement'of one plunger romsuch position does not remove the yielding pressure from the other plungers, as was the case in the Ryon patent above cited. Y

Specialprovision is also made orwvitlidrawing all of the plungers when a wett carrier is to be transferred and for this purpose I provide the releasing device` shown particularly in Fig. 3. This device consists of a frame 40, having opennotehed portions 41 adapted to bear upon the stud 36, and embracing the series of weights V35.

An .arm 42 extends -behin'd the upright portions ofy the plungers 20 and a luge-.$3 is positioned for engagement by a stud 44 (Fig. 2) movable with the transferrer 12 and swinging-the frame 4:0 forward: as'the transferrer descends. Upon such movement, the armf42 engages and withdraws all ot the plungers 20-rom the-path ott-he incoming weft carrier. l

Having thus described our invention and theadvantages thereof, we dol not wish to'L be limited to" the details herein disclosed otherwise than as set forth in the olaims,` but what We Claim is 1 '1In a loom,;a weft detector comprisingy a stand, a :plurality of detecting plungers mounted for independent movement in said stand, a'horizontal studixed in said stand above said plunger-s, and a plurality of separate segmental weights pivotally mounted for independent forward and upward Inovementagainst gravity and each yieldingly engaging one. 01' said plungers tonormally maintain said ,plunger inrearward operative position, said weights being mounted in Closely parallel relation and each weight being ,of ,an extreme thickness substantially equal to the Vdistance betweenA the centers of adjacent .detect-ing plungers.

v"2. In a loom, a wetdetector comprising a stand, a plurality of detecting plungers mounted for independent movement in said stand, a plurality of separate weights mountedfor independent swinging movement and each yieldingly. engaging one .of said plungers tdnOrmaflly maintain saidpplunger in rearward operative position,. and means to simultaneously withdrawn all of said plungers and weights from normal operative position.

3. In a loom, a weft detector comprising a stand, a plurality of detecting plungers mounted orindependent movement in said .sta-nd va plurality of.separate-weights mounted for independent swinging movement and each vyieldingly. engaging one of said plungers to normally maintain said plunger in rearward'operative-position, and means to withdraw all of said plungers and weigh-ts, said means comprising a frame embracing said .weights and having an arm positioned behind a portion of each plunger.

4. In a loom, a weit detector comprising a stand, a plurality of ldetecting plungers mounted for independent sliding movement in said stand, al pluralityv of separatev swinging weights each yieldingly engaging oneof said plungers, a iXed vstud o n which -said weights are pivoted, and means to' withdraw all of said plungers, said-means comprising a frame embracing said weights and pivoted on'said stud and having anv arm positioned behind an upright portion of each plunger. 5. Ina loom', a weft detector comprising a stand, a plurality of ydetecting plungers mounted for independent sliding movement Vin said stand,` a plurality of separate swinging weights each yieldingly engaging-one of said plungers, a stud on which said weights are pivoted, and-means to withdraw all of said plungeraV said means comprising aframe embracing saidy weights and having open bearing notches fitting said studY and-anarm positioned behind a portion of eachy plunger.

`6. As an article otmanufacture a Ysegmental weight for 'a multiple plunger weft detector, said iweighthaving alreeessed end portion adapted toreceive the'forward end of a weft detecting plu-nger and having a portion substantially equal in l thickness to the distance between the centers ofadjacent plungers, and having a forward-ly projecting counterweight*portion.

ln testimony whereof we havel hereunto alilxed our signatures.

'JOSEPH EL; FLANIGA'N. FRAN-GIS ASHTON. 

